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OpCodes.Initblk Field

Initializes a specified block of memory at a specific address to a given size and initial value.

Namespace:  System.Reflection.Emit
Assembly:  mscorlib (in mscorlib.dll)

public static readonly OpCode Initblk

The following table lists the instruction's hexadecimal and Microsoft Intermediate Language (MSIL) assembly format, along with a brief reference summary:

Format

Assembly Format

Description

FE 18

initblk

Set each location in a block of memory to a given value.

The stack transitional behavior, in sequential order, is:

  1. A starting address is pushed onto the stack.

  2. An initialization value is pushed onto the stack.

  3. The number of bytes to initialize is pushed onto the stack.

  4. The number of bytes, the initialization value, and the starting address are popped from the stack, and the initialization is performed as per their values.

The initblk instruction sets the number (unsigned int32) of bytes starting at the specified address (of type native int, &, or *) to the initialization value (of type unsigned int8). initblk assumes that the starting address is aligned to the natural size of the machine.

The operation of the initblk instructions can be altered by an immediately preceding Volatile or Unaligned prefix instruction.

NullReferenceException may be thrown if an invalid address is detected.

The following Emit method overload can use the initblk opcode:

  • ILGenerator.Emit(OpCode)

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0
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